Flotr is a javascript plotting library based on the Prototype Javascript Framework (version 1.6.0.2 at the moment) and inspired by Flot (written by Ole Laursen).

Sprockets is a Ruby library that preprocesses and concatenates JavaScript source files. It takes any number of source files and preprocesses them line-by-line in order to build a single concatenation. Specially formatted lines act as directives to the Sprockets preprocessor, telling it to require the contents of another file or library first or to provide a set of asset files (such as images or stylesheets) to the document root.

A simple web-based WYSIWYG editor, written in MooTools.

A Rails plugin that delivers a special message to DiggBar users, or runs frame-killer javascript.

As a Typekit user, you’ll have access to our library of high-quality fonts. Just add a line of JavaScript to your markup, tell us what fonts you want to use, and then craft your pages the way you always have. Except now you’ll be able to use real fonts.

Asynchronous JavaScript and CSS, also known as CSSHttpRequest, is a method of URI-encoding data in 2KB chunks split over several CSS rules with a modified data URI scheme. Because CSS is not subject to the same-origin policy, no service proxy is required.

scriptaculous replacement

iUI is a framework consisting of a JavaScript library, CSS, and images for developing iPhone webapps.

Highslide JS is an open source image, media and gallery viewer written in JavaScript.

Despite the many JavaScript libraries that are available today, I cannot find one that makes it easy to add keyboard shortcuts(or accelerators) to your javascript app. This is because keyboard shortcuts where only used in JavaScript games - no serious web application used keyboard shortcuts to navigate around its interface. But Google apps like Google Reader and Gmail changed that. So, I have created a function to make adding shortcuts to your application much easier.

HotKey provides functionality similar to the accesskey attribute, but has many enhancements that allow for more granular control when creating keyboard driven interfaces.

In a nutshell, Bowline lets you build cross platform desktop applications with Ruby, HTML and JavaScript. The idea is to make building desktop apps as simple (and fun) as building Rails websites.

Celerity is a JRuby wrapper around HtmlUnit – a headless Java browser with JavaScript support. It provides a simple API for programmatic navigation through web applications. Celerity aims at being API compatible with Watir.

validate( "email".is("required").andIsAn("email") );

WKRTE is a jQuery rich text editor based on lwrte by plandem.

Javascript sprite library for Canvas

sing Google’s JavaScript Library CDN comes with a 1/3 of a second tax on missing. (Note that a tax like this applies to opening connections to a any new host: JavaScript Library CDNs, advertisers, analytics and visitor tracking, etc. This is why you should try to reduce the number of different hostnames you serve content from.)

Helium accepts a list of URLs for different sections of a site then loads and parses each page to build up a list of all

jsPDF is an open-source library for generating PDF documents using nothing but Javascript. You can use it in a Firefox extension, in Server Side Javascript and with Data URIs in some browsers.

Grafico is a javascript charting library built with Raphaël and Prototype.js. The library provides a wide array of graphs and stays with the guidelines laid out by Stephen Few and Edward Tufte. Grafico provides pretty charts that effectively communicate their information.